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I have seen many LED Flashers, but they seem to rely on capacitor discharge to light the LEDs.
I want to drive around 40 to 60 LEDs and alternate between these LEDs and be able to adjust the Flash rate.
One side on for 1 to 2 seconds then the other side on 1 to 2 seconds and alternate between each set of LEDs.
The supply voltage will provide the LED Power. I just need to alternate each side on and off at an equal rate.
Can anyone help with this design or know of site with this type of circuit?

If You can google it, why can't You post the new link? What if I stumble upon an evil plot and get killed by some bad guys because I was forced to use google and my own judgment? Could you really stand knowing that? JK XD